Match ing-machine



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B.l G. LUTHER.

MATCHING MACHINE. No. 403,201. Patented May 14, 1889.

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UNITED STATES PATENT OFFICE.

BENJAMIN G. LUTHER, OF VVOROESTER, MASSACHUSETTS.

MATCHING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 403,201, dated May 14,1889. Application filed November 19, 1888. Serial No. 291,243. (Nomodel.)

To tZZ whom t may concern.-

Be it known that I, BENJAMIN G. LUTHER, a citizen of the United States,residing at Vorcester, in the county of Vorcester and State ofMassachusetts, have invented a new and useful Improvement inMatching-Machines, of which the following` is a specification.

The object of my invention is to provide a machine in which taperingboards, or boards of different width, as employed in the manufacture ofpacking-boxes, can be provided with tongue and groove at their oppositeedges simultaneously; and it consists in the arrangement of the shaft ofthe saw or cutter upon a pivoted frame above the table, with anadjustable guide for properly gaging the depth of the cut to be made inthe edge of the board, and also in the arrangement of the shaft of a sawor cutter upon a pivotal frame, with Ineans for depressing the saw orcutter below the plane of the surface of the table at the will of theoperator to prevent the action of the saw or cutter upon the edge of theboard when desired.

Figure 1 represents a side elevation of my improved matching-machine.Fig. 2 represents a top viewwith theaipper saw or cutter removed, itspivotedg holding frame being broken away in order to show, the pivotedholding-frame of the lower saw or cutter. Fig. 3 is a top view of theouter end of the holding-frame for the upper saw or cutter. Fig. 4 is acorresponding side elevation of the same, showing the line of the tableand the end of an entering board by broken lines. Fig. 5 is a verticalsection taken in the line of Fig. 4. Fig. 6 represents the frontelevation of the foundation-plate of the guide for the edge ofthe board.Fig. 7 is a top view of the same. Fig. 8 is a forward end View. Fig. 9shows side and edge views of theremovable piece for forming the shoeportion of the edge guide at the inner side of the saw or cut- I ter.Fig. 10 shows side, top, and forward edge views of the supplementaryplate which forms the shoe portion of the edge guide at the front sideof the saw or cutter. Fig. 11 represents a side view of the bell-cranklever to which the adjustable guide is attached. Fig. 12 represents atop view of the same and the attached shaft. Fig. 13 represents a sideView of theupper arm of the bell-cranklever,show ing the slot to receivethe adjusting-bolt.

In the accompanying drawings, A is the frame of the machine; B, thefeeding-table. C C are fixed side guides arranged to guide the boards attheir inner side, and E E and E E are the feeding-rollers, which serveto carry the board forward under the action of the saws or cutters whichact upon the edgesy 6o v of the board. The driving-shaft F is supportedin the bearings a, a a of the bracket G, which. is attached to one endof the frame A, and upon the shaft F are placed the tight and loosepulleys H H', by means of which operative connection is made to themachine, the cone-pulley l, for driving the feeding-rollers, and thepulleys J and J for driving the saws or cutters.

The bracket G is provided with the inwardlydirected ears h b, to whichis pivoted the frame K, bearing at its outer end the shaft L, whichcarries the saw or cutter for operating upon the upper edge of theboard. Upon the shaft L is placed the pulleyT M, from which connectionis made by open belt t with the pulley J upon the shaft F, as shown bythe broken lines in Fig. 1, and to the arm N, which extends backwardfrom the frame K, is secured the weight c, which is adapted to partiallybalance the weight of the frame K, so that the bearing-surface of theguide P will rest Withthe proper pressure upon the upper edge of theboard. To the bell-crank lever O, attached to a short shaft, d, which isheld in suitable bearings at the under side of the frame K, vis pivotedthe guide P by means of the screw-stud e, which stud is located at ashort distance below the shaft L, and upon the frame K is formed an ear,f, to the upper 9o. end of which is pivoted the bolt g, provided withthe thumbnut h, the said boltg passing through the slot t' in theupwardly-extending arm j of the bell-crank lever O, the said slot beingshown in Fig. 13, and upon the bolt g, between the ear f and the arm j,is placed the spiral spring 7c, whereby upon screwing up the thumb-nut hthe bearing-surface of the guide P will be carried downward from the sawor cutter shaft L, and upon unscrewing 10c the said nut thebearing-surface will be carried upward toward the saw or cutter shaft,

and by this means the depth of the cut of the saw or cutter Q in theedge of the board can be properly regulated, and proper compensatingadjustment can also be made for the wear oi the saw or cutter incontinued use. The saw or cutter Q is held upon a sleeve, m, which issecured by set-screw to the shai't L and provided with the nut n,adapted to screw up against the side of the saw or cutter. The curvedpiece r (shown in Fig. 9) is attached by means of screws to the side ofthe main plate s of the guide P, the said piece r forming thebearing-shoe at the inner side of the saw or cutter Q, which in thiscase is employed for forming a groove in the upper edge of the board,and the plate t', (shown in Fig.

- 10,) which forms the bearing-shoe at the outer side of the saw orcutter, is attached to the flange u of the main plate s' of the guide bymeans ot screws passingI through the slots w in the tlange Iu and intothe rim o of the plate t', and when so attached the surface oi' thelower edge of the plate t" will be in the same horizontal plane with thecorresponding under surface of the attached piece r, leaving anintervening space, q, for the free move ment of the saw or cutter, theiiange q oi' the main plate s' at the same time extending downward for ashort distance at the inner side of the board below the bearing-shoepiece r.

In order that the guide I should be held in the saine parallel positionwith the feedingtable at all required angular positions of the frame l,l pivot one end of the rod R to the fixed ear i) upon the bracket G andthe other end of the same to the side of t-he main plate s of the guidel) at the screw-stud r above the shaft L, so that the rod R will formaportion of a parallel movement to preserve the proper relative positionof the guide l. through the extreme limit of the working movement of theframe K. The guideplate s is provided with an inclined under surface, s,which is adapted to engage with the forward end ot' the board t, asshown by the broken lines in Fig. 4, and the continued forward movementof the board after its first contact with the incline s, caused by thefeeding movement of the rollers E E', will serve to raise the frame Kand saw or cutter Q to the proper elevation to operate upon the edge oi'the board; and the saw or cutter Q will thereafter be automaticallyvaried in height, according to the width of the board, thus providingfor any required degree of taper in the same. The shaft S, which carriesth'e lower saw or cutter, T, to form the tongue, is held in the trame V,which is pivoted to the frame A at the points u i", the said frame beingprovided with the 'attached dowuwardly-turned arm u', the lower end ofwhich is provided with the pedal cr, and to an arm, y, extending forwardfrom a line joining the pivoting-points of the frame V, is secured. thecounterbalancing-weight Z, which is to be so proportioned that the pedal.twill be held in its elevated position by means oi' the said weight,oran equivalent spring may be employed, the elevated position of the'frame V and saw or cutter T being regulated by means ot' the stop-screwct, which passes downward through the ear Z2 of the frame A, and bymeans of the stop-` screw ce the saw or cutter T can be adjusted to cutto the desired depth in the edge of the board, and whenever it isdesired to leave the edge of the board without a tongue the operator hasonly to press down with his foot upon the pedal thus depressing theframeV and saw or cutter T, so that the same cannot act upon the edge ofthe board as it passes through the machine. The frame K can be raised toits proper working position by means of the pedal fc, which is connectedto the arm N and frame K by means of the rod fm', and the feed-rollers EE, E E are arranged and driven as usual in such machines.

The shaft S is provided with a pulley, lV, which is driven from thepulley J by means of the cross-belt (Shown by broken lines in Fig. l.)

I claim as my inventionl. In a matching-maehine, the combination, withthe feeding-rollers and the table or support for one edge of the board,of a pivoted frame located above the table or support, a saw or cutterheld upon a shaftin the pivoted trame, and an adjustable guide pivotedto the pivotcd trame for gaging the depth of the cut to be made in theedge of the board, substantially as described.

2. In a matehing-maelline, the combination, with the feeding-rollers andthe table or support for one edge of. the board, ot a pivoted frame, asaw or cutter held upon a shaft in the pivoted frame, the adjustableguide pivoted to the pivoted frame and adapted to gage the depth of thecut to be made in the edge ot' the board, and the rod which forms theparallel movement for preserving the proper relation of the guide andthe table or support 'for the board at the varying inclination of thepivoted frame, substantially as described.

3. In a matching-maehine, the combination, with the feeding-rollers anda table or support for one edge ot' the board, oi' a pivoted trame, asaw or cutter held upon a shaft in the pivoted i'ra1ne,the adjustableguide adapted to gage the depth of the cut to be made in the edge oi'theboard,the pivotcd lever and screw-bolt for adjusting the guide, andthe connecting-rod whichv forms the parallel movement for preservin theproper relation ol' the guide and the table or support for the board,substantially as described.

,ENJAMI G. LUTHER.

Nituessesz HENRY F. Hemus, Louis CUTTING.

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